Основной целью «Узбекского физического журнала» является доведение до широкого научного сообщества новых результатов теоретических и экспериментальных исследований в различных областях современной физики, полученных учеными Узбекистана и зарубежных стран.
| Nashriyot | Ўзбекистон Республикаси Фанлар академияси |
|---|---|
| Shahar | Toshkent |
| ISSN | 1025-8817 |
| e-ISSN | 2181-077X |
| Tashkil etilgan | 1957 |
| Nashr davriyligi | annual international symposium on ph |
| Maqolalar soni | 430 |
| OAK holati | Ro‘yxatda |
It has been found that silicon with magnetic nanoclusters is basis for new photomagnetic material possessing high sensitivity both to background and to IR-light. In enough narrow interval of background illumination…
The photosensitive sandwich-structured Au-vGaAs:O-nCdS-nInP-Au semiconductor formed by vacuum deposition of thin films of cadmium sulfide and indium phosphide on a single-crystal substrate of gallium arsenide has been…
A physical model is proposed for the growth of silicon nanoparticles in the form SiH+3 →SiH03 based on the Mott-Gurney scheme. The concept of the formation of silicon nanoparticles from monosilane was…
In this work, the diffusion evolution of small electromagnet perturbations in II-type superconductors, placed in a viscous flux flow state is investigated. Analytical formulas for depth and speed of penetration of a…
A frequency shift of Mandelshtam-Brillouin components in spectra of fine structure of Rayleigh light scattering was studied in aqueous solutions of 4-methylpyridine at various concentration and temperature. In the…
The domain structure of thin single-crystal plate of the iron garnet Tb3Fe5O12 has been investigated using the magneto-optical method in the temperature range near the magnetic compensation point of this ferrimagnet Tс…
The possibility of obtaining a tungsten-substituting Ti0.70Mo0.30C cubic alloy by high-temperature sintering (at 2500 K) of powders of TiC and MoC cubic carbides mixed in appropriate proportions has been considered. An…
By computer simulation in the framework of molecular dynamics, it was found that the processes of deposition of non-hydrogenated and hydrogenated carbon atoms onto defect-free graphene depend on the hydrogenation degree…
The paper reports the formation of ZnO nanorods on the surface of a stainless steel mesh. The nanorods in cross section have a regular hexagonal shape. The length of nanorods is 2−15 microns, while a diameter varies…
Correlation between spectrum of the low temperature (T = 4.2 K) photoluminescence and anomalous photovoltages properties of oblique sputtered polycrystalline thin films CdTe, CdTe:In is discovered. In spectrum of…
By the Кubo-Greenwood formula using the Davis-Mott approximation, the spectra of infra-red absorption in amorphous semiconductors are investigated. In is shown, that occurrence of bands of strong absorption in defect…
The transparency of coefficients of the asymmetric potential barriers of a semiconductor structure consisting of alternating potential barriers and potential wells are calculated. In this case, the difference between…
Oscillations of longitudinal electrical conductivity in narrow-gap semiconductors are considered. A theory was constructed of the temperature dependence of the oscillations of the longitudinal electrical conductivity in…
We study strongly non-stationary stochastic processes which take place in the phase space of disk-like self-gravitating systems at the early stage of their evolution. Numerical calculations were carried out based on the…
On the basis of the Eliashberg equation’s system the temperature of superconducting transition of fullerene C60 is calculated. An application of the superconducting material in the field of biophysics and medicine is…
The refractometry and infrared spectroscopy methods were used to identify the concentration feature of optical characteristics of the dimethylformamide-acetonitrile binary solutions. The refractive indices of mixtures…
The article contains a hypothesis on the dominance of chemical elements of top periods of the Periodic Table in living matter. The idea is that the elements of the third and next periods of the table, in contrast to the…
Influence of gate lateral extension on the threshold voltage and short-channel effects in SOI FinFET with different shape are simulated by Advanced TCAD Sentaurus method. It is shown gate lateral extension practically…
Nuclear fuel of IRT-4M type was unloaded from the active core of the WWR-SM research reactor each time in different burn-ups. Activity of isotopes in fission products releasing from fuel assemblies were measured and…
The effect of the mass of primary ions on the formation of defects and clusters on the surface of silicon crystals using the SIMS and TRIM methods is investigated. It is shown that the formed interstitial defects on the…
The spectral dependence of MCD was measured at the temperature T=90 K and 300 K in region of λ=400−500 nm. From the experimental results the ratio of Judd`s parameters of intensity of transitions Ω6−Ω4 was found…
In the paper, a correlation between spectrum of low temperature (T = 4.2 K) photoluminescence and anomalous photovoltaic characteristics of oblique sputtered polycrystaline films CdTe, CdTe:In was discovered.
Effect of a transition amorphous layer at the interface between higher manganese silicide (HMS) Mn4Si7 and silicon doped with manganese (Si<Mn>) on the photoelectric properties of heterostructures has been…
It is found that the direct branch of I–V characteristic of the n-GaAs-р-(GaAs)1−x−y(Ge2)x(ZnSe)y heterostructures has the site of sublinear current growth with the voltage of the type V=V0exp(Jad). The concentrations…
In this paper, a dispersion of plasma fluctuations has been theoretically and experimentally studied in monocrystal samples Si(111) and Ge(111). It is shown that the dispersion depends on crystallographic orientations…
The quadratic photoconductivity due to the electric field of a light wave is calculated for a multivalley semi-infinite semiconductor, which is caused by the scattering of current carriers on the surface. By the method…
The paper presents results of studies of the azimuthal correlations in the formation of cumulative protons and pions with tracking particles in hadron- and nucleus-nucleus collisions.
A special catalog of 1119 open star clusters (OSC) of our Galaxy has been compiled. The physical parameters such as mass, absolute magnitude, distance modulus, metallicity, age, spectral class and distance from the…
By means of nonstationary capacitance spectroscopy of deep levels the residual effects in silicon doped with impurities of T-ions and subjected to uniform compression are investigated. It is shown that the effect of…
On the basis of the active element of Ti3+:Al2O3, the possibility of converting solar energy into laser radiation energy is investigated. By the computer simulations, it was shown the possibility of reducing the…
In this work, the formation of the Taylor cone in high-vacuum electrospray ionization using a static magnetic mass-spectrometer was studied. A simple vacuum electrospray ionization source was designed and combined with…
An efficient method of formation of the ordered fullerene C60 nanoaggregates in the volume of evaporating fullerene droplets in mixtures of two-component solvents (benzene and acetonitrile) on a flat substrate surface…
Different ways of C60 fullerene adsorption on surface of defect-free graphene have been studied by the methods of computer simulation within the framework of the Brenner potential. The energies of binding and distance…
The dependence of accuracy of temperature measurement by semiconductor sensors on stabilization factor of the current source is investigated and the results are presented. It is shown that the presence of slope of the…
The effect of preliminary temperature heating under high vacuum conditions on the distribution profiles of impurity atoms over the depth of the Ni-GaP-SnO2 (sital) system is studied. It is shown that such heating…
Using the method of CC-DLTS the properties of the Si-SiO2 transition layer and relaxation processes in the system Si–SiO2 .are investigated. A scheme of various electronic relaxation processes of the charge occurring in…
A simple analytical model of the density of states of two-dimensional electron gas has been proposed. Broadening the quasi-stationary states of electron in quantum dot of heterostructures is taken into account. It is…
Results of comparative analysis of the formation processes of 7 Be nuclei and (α+3 He) system in channels with formation of alpha-particles in 16Op-collisions at 3.25 A GeV/s are presented. It is obtained that the two…
The observational data of long-term continuous monitoring of the gravitationally lensed system В1422+237 are analyzed. A brief description of the photometric method for image processing is given, light curves are…
In the present work the peculiarities of ion implantation and colliding particles mass ratio influence on the ranges, energy loss and profiles of distribution for 1−5 keV P+ ions channelling in Si(110) and SiC(110) at…
The results of thermodesorption thermoionic (surface-ionization) spectrometry (TDTIS) investigations of synthetic cannnabinoid АВ-Chminaca (a derivative of indazole) and seized smoking mixtures on diverse matrixes have…
The application of synergetics as a modern transdisciplinary science in radiation physics is discussed. It is shown that the basic concepts of synergetics are very well applicable to the description of the number of…
Surface-enhanced Raman scattering (SERS) technique is an important and powerful analytical tool, which has attracted much attention for environmental monitoring, chemical analysis and biomedical research. In this paper…
The volcano-type size dependence of the extraordinary catalytic activity of gold nanoparticles in CO oxidation is discussed on the basis of combination of the d-band model, the jellium model of metal clusters and the…
Anisotropy of attenuation of acoustic waves in photorefractive BSO and BGO crystals has been studied in the frequency range of 0.4−1.6 GHz. The anisotropy parameters determined by the imaginary constants of BSO and BGO…
Significant oscillations of the spectral distribution of the idler pulses in the optical parametric amplification of chirped laser pulse have been observed experimentally. On the base of the obtained simple analytical…
The formation of pseudomorphous GeSiSn layers directly on Si have been investigated. The transition from two-dimensional growth regime to three-dimensional of the GeSiSn film on Si(100) was studied for different…
Room temperature photoluminescence (PL) properties of vertically aligned and spindle-shaped, randomly oriented ZnO nanorods synthesized by using a low temperature hydrothermal method are studied. In air, the vertically…
Laser driving technology is an important technology in high energy physics, shock wave physics and explosive initiation application. In this paper, velocities and impact stresses of four types of laser-driven flyers…
The purpose of our research is calculation of capacity and energy of an independent solar power station. Theoretical calculations of the basic power characteristics of the solar panels established in territory of…